Building wxPython in Cygwin

GNU Radio
1

I’m trying to build wxPython 2.8.1.1 under Cygwin following the
instructions on http://gnuradio.org/trac/wiki/wxPythonCygwin . I have
successfully done this previously, but was having difficulty making GNU
Radio (which I have since identified what was wrong). I went through an
uninstalled my wxPython and tried to rebuild it. Unfortunately, now I
getting stuck on “make”. I get the following error. Are there any
suggestions as to what may be wrong?

Configured wxWidgets 2.8.1 for `i686-pc-cygwin’
Which GUI toolkit should wxWidgets use? msw
Should wxWidgets be compiled into single library? no
Should wxWidgets be compiled in debug mode? no
Should wxWidgets be linked as a shared library? yes
Should wxWidgets be compiled in Unicode mode? no
What level of wxWidgets compatibility should be enabled?
wxWidgets 2.4 no
wxWidgets 2.6 yes
Which libraries should wxWidgets use?
jpeg sys
png sys
regex sys
tiff builtin
zlib sys
odbc no
expat sys
libmspack no
sdl no

John@FREYT42 /usr/src/wxPython-src-2.8.1.1/build-local
$ make
/usr/src/wxPython-src-2.8.1.1/build-local/bk-deps gcc -c -o
wxtiff_tif_jpeg.o -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXDEBUG__
-I/usr/src/wxPython-src-2.8.1.1/build-local/lib/wx/include/msw-ansi-debug-2.8
-I…/include -Wall -Wundef -O2 -fno-strict-aliasing
…/src/tiff/tif_jpeg.c
…/src/tiff/tif_jpeg.c: In function alloc_downsampled_buffers': ../src/tiff/tif_jpeg.c:579: error: structure has no member named width_in_blocks’
…/src/tiff/tif_jpeg.c: In function JPEGEncodeRaw': ../src/tiff/tif_jpeg.c:1250: error: structure has no member named width_in_blocks’
…/src/tiff/tif_jpeg.c: In function JPEGPostEncode': ../src/tiff/tif_jpeg.c:1311: error: structure has no member named width_in_blocks’
make: *** [wxtiff_tif_jpeg.o] Error 1

2

John Stralka wrote:

                                   jpeg               sys

You are using your system jpeg library, but the instructions on the wiki
were tested using the wxWidgets builtin jpeg library.

$ make
…/src/tiff/tif_jpeg.c: In function JPEGPostEncode': ../src/tiff/tif_jpeg.c:1311: error: structure has no member namedwidth_in_blocks’
make: *** [wxtiff_tif_jpeg.o] Error 1

The errors appear to be associated with the jpeg functions. Try adding
“–with-libjpeg=builtin” to your …/configure to use the libjpeg that
comes
with wxPython. Or, if you don’t need it, you can try uninstalling the
Cygwin libjpeg-devel package. Or, if you really want to get into it,
you
can compare your /usr/include/jpeglib.h with
wxPython-src-2.8.1.1/src/jpeg/jpeglib.h and try to figure out if you
need a
newer version (or an older version; or a different version …).

Let me know if this works; if it does I will add a note in the wiki
instructions.

– Don W.